"Unable to read beyond the end of the stream" error in MassHunter Qualitative Analysis 10.0

Question

Hello. I'm acquirind data in an Agilent 6230B TOF, and when I try to open the file in MassHunter, I get this error message: "Unable to read beyond the end of the stream". I got this error before, and usually acquiring new data and/or restarting everything works, but it's not working now. What is the main issue here, and how to solve it? Thank you very much in advance.

howard_sanford · Answer

Hello RaquelKonzen , 
 This type of error usually indicates a potential issue with part of your path or some of the files copied in during data file creation, such as the method. It is recommended not to exceed a 45 character name length for methods, worklists, or datafiles. This method appears to have exceeded that if I'm reading the error correctly. Also keep in mind that the acquisition method is copied into the data file, and it contains other files and folders that further lengthen the paths that must be created. 
 I would try creating a new method from the default and keep the name under 45 characters. If the error now occurs with all data files, even ones opened successfully in the past, then you may want to try resetting your qual preferences using the tool found in the Windows Start menu under Agilent MassHunter Qualitative->Tools for Qual->Restore Qual Settings. Make certain all copies of Qual are closed before running this.